28 lines
914 B
Java
28 lines
914 B
Java
import java.util.OptionalInt;
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public final class AllSameCharacters {
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public static void main(String[] aArgs) {
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String[] words = { "", " ", "2", "333", ".55", "tttTTT", "4444 444k" };
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for ( String word : words ) {
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analyse(word);
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}
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}
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private static void analyse(String aText) {
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System.out.println("Examining \"" + aText + "\", which has length " + aText.length() + ":");
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OptionalInt mismatch = aText.chars().filter( ch -> ch != aText.charAt(0) ).findFirst();
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if ( mismatch.isPresent() ) {
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char fault = (char) mismatch.getAsInt();
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System.out.println(" Not all characters in the string are the same.");
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System.out.println(" Character \"" + fault + "\" (" + Integer.toHexString((char) fault)
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+ ") is different at index " + aText.indexOf(fault));
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} else {
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System.out.println(" All characters in the string are the same.");
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}
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}
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}
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